Sampling errors: variation coefficients for the annual earnings per worker variable Degree of disability Units: coefficient of variation Total Total 2021 2.41 2020 2.19 2019 2.23 2018 2.43 2017 2.43 2016 2.75 2015 2.32 2014 2.51 2013 2.32 2012 2.56 2011 2.53 2010 2.60 33% to 44% 2021 2.70 2020 2.52 2019 2.56 2018 2.70 2017 2.82 2016 2.81 2015 2.87 2014 2.93 2013 2.87 2012 2.97 2011 3.12 2010 3.12 45% to 64% 2021 4.95 2020 4.83 2019 4.71 2018 5.05 2017 5.60 2016 5.38 2015 5.51 2014 5.78 2013 4.81 2012 5.13 2011 5.30 2010 5.30 65% and over 2021 9.44 2020 7.99 2019 8.37 2018 8.74 2017 6.91 2016 12.37 2015 6.77 2014 7.91 2013 5.16 2012 6.02 2011 6.13 2010 6.13 No data recorded 2021 7.52 2020 8.37 2019 7.87 2018 10.14 2017 9.21 2016 7.72 2015 7.79 2014 10.36 2013 .. 2012 .. 2011 .. 2010 .. Notes: 1) Persons with disabilities refers to persons formally recognised as disabled, with a degree of dissability of 33% or over, according to the procedure for evaluating this established in the RD 1971/1999 and modified by the RD 1856/2009. 2) When the box is marked with a '-' sign before the data, it indicates that the number of sample observations is between 100 and 500, so the figure is subject to great variability. 3) (..) = data not available. Source: Spanish National Statistics Institute